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  1. as·tron·o·my
    IPA[əˈstränəmē]
  2. noun

    • 1. the branch of science which deals with celestial objects, space, and the physical universe as a whole.

  3. Variation

    • n.: noun: astronomy

    • noun

      the branch of science which deals with celestial objects, space, and the physical universe as a whole.
    • noun

      the branch of astronomy that uses radar to map the surfaces of planetary bodies in the solar system.
    • noun

      the branch of astronomy concerned with radio emissions from celestial objects.
    • noun

      the branch of astronomy concerned with radio emissions from celestial objects.
    • noun

      the branch of astronomy concerned with the detection and measurement of high-energy electromagnetic radiation emitted by celestial objects.
    • noun

      the branch of astronomy concerned with the detection and measurement of high-energy electromagnetic radiation emitted by celestial objects.
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